/ *? morgorithm?-?javascript'?modification?history:'??1.0?16-Feb-2001?-?phil?fresLet? (Sales@frez.co.uk )?-?initial? Version? (Vb / asp? Code) '? 1.0? 21-feb-2001? -? Enrico? Mosanghini? (Erik504@yahoo.com)? -? JavaScript? Porting * / function? Md5 (SMESSAGE)? {Function? RotateLeft (LVALUE,? ISHIFTBITS)? {? RETURN? (Lvalue <
>> (32-iShiftBits));?}
Function? addunsigned (lx, ly)? {
Var? LX4, LY4, LX8, LY8, LRESULT
LX8? =? (lx? &? 0x80000000);
LY8? =? (ly? &? 0x80000000);
LX4? =? (lx? &? 0x40000000);
LY4? =? (LY? &? 0x40000000);
LRESULT? =? (LX? &? 0x3fffffff) (Ly? &? 0x3fffffff);
IF? (lx4? &? ly4)? Return? (LRESULT? ^? 0x80000000? ^? LX8? ^? ly8);
IF? (lx4? |? {{
IF? (LRESULT? &? 0x40000000)? RETURN? (LRESULT? ^? 0xc0000000? ^? LX8? ^? ly8);
Else? Return? (LRESULT? ^? 0x40000000? ^? LX8? ^? ly8);
}? Else? Return? (LRESULT? ^? LX8? ^? ly8);
}
Function? f (x, y, z)? {? return? (x? &? y)? |? ((~ x)? &? z);?}
Function? g (x, y, z)? {? return? (x? &? z)? |? (y? &? (~ z)) ;?}
Function? h (x, y, z)? {? return? (x? ^? y? ^? z) ;?}
Function? i (x, y, z)? {? return? (y? ^? (x? |? (~ z)));?}
FUNCTION? FF (A, B, C, D, X, S, AC)? {
A? =? addunsigned (A,? addunsigned (addunsigned (f (b,? c,? d) ,? x) ,? AC));
RETURN? Addunsigned (RotateLeft (A,? s) ,? b);
}
FUNCTION? GG (A, B, C, D, X, S, AC)? {
A? =? addunsigned (A,? addunsigned (addunsigned (g (b,? c,? d) ,? x) ,? AC));
RETURN? Addunsigned (RotateLeft (A,? s) ,? b);
}
Function? HH (A, B, C, D, X, S, AC)? {
a? =? addunsigned (A,? addunsigned (addunsigned (h (b,? c,? d) ,? x) ,? ac));
RETURN? Addunsigned (RotateLeft (A,? s) ,? b);
}
FUNCTION? II (A, B, C, D, X, S, AC)? {
A? =? addunsigned (A,? addunsigned (addunsigned (i (b,? c,? d) ,? x) ,? ac));
RETURN? Addunsigned (RotateLeft (A,? s) ,? b);
}
FUNCTION? ConvertToWordArray (SMESSAGE)? {
Var? lwordcount;
Var? LMessageLength? =? sMessageLength; var? lnumberofwords_temp1 = lMessageLength? ? 8;
Var? lnumberofwords_temp2 = (lnumberofwords_temp1- (lnumberofwords_temp1? 64)) / 64;
Var? lnumberofwords? =? (lnumberofwords_temp2 1) * 16;
Var? lwordArray = array (lnumberofwords-1);
Var? lbyteposition? =? 0;
Var? lbytecount? =? 0;
While? (? lbytecount?
LWORDCOUNT? =? (lbytecount- (lbytecount?%? 4) / 4;
LbytePosition? =? (lbytecount?%? 4) * 8;
LWORDARRAY [LWORDCOUNT]? =? (lwordArray [lwordcount]? |? (SMESSAGE.CHARCODEAT <
Lbytecount ;
}
LWORDCOUNT? =? (lbytecount- (lbytecount?%? 4) / 4;
LbytePosition? =? (lbytecount?%? 4) * 8;
LWORDARRAY [LWORDCOUNT] =? LWORDARRAY [LWORDCOUNT]? |? (0x80 <
LWORDARRAY [lnumberofwords-2]? =? LMessageLength << 3;
LWORDARRAY [lnumberofwords-1]? =? LMessageLength >>> 29;
RETURN? LWORDARRAY;
}
Function? Wordtohex (LVALUE)? {
VAR? WordtohexValue = "" "" "" "" "", Lbyte, LCOUNT;
For? (lcount? =? 0; lcount <= 3; LCOUNT )? {
Lbyte? =? (LVALUE >>> (LCOUNT * 8))? &? 255;
WordToHexValue_Temp? =? "0"? Lbyte.tostring (16);
WordToHexValue? =? WordtoHexValue? ? WordtoHexValue_temp.substr (WordToHexValue_Temp.length-2, 2);
}
RETURN? WordtohexValue;
}
Var? x = array ();
VAR? K, AA, BB, CC, DD, A, B, C, D
Var? S11 = 7,? S12 = 12,? S13 = 17,? S14 = 22;
VAR? S21 = 5,? S22 = 9?,? s23 = 14,? s24 = 20;
Var? s31 = 4,? s32 = 11,? s33 = 16,? s34 = 23;
VAR? S41 = 6,? s42 = 10,? s43 = 15,? s44 = 21;
//?Steps?1?nd?2.?append?padding?bits?and?length?nd?convert?to?words
X? =? ConvertToWordArray (SMESSAGE);
//?Step?3.?initialise
a? =? 0x67452301;? b? =? 0xefcdab89;? c? =? 0x98badcfe;? d? =? 0x10325476; //? step? 4.? process? the? message? IN? 16-Word? blocks
FOR? (k = 0; K
AA = a;? Bb = b;? Cc = c;? DD = D;
A = ff (A, B, C, D, X [K 0] ,? S11, 0XD76AA478);
D = ff (D, A, B, C, X [K 1] ,? S12, 0XE8C7B756);
C = ff (C, D, A, B, X [K 2] ,? S13, 0X242070DB);
B = ff (B, C, D, A, X [K 3] ,? S14, 0XC1BDCEEE);
A = ff (A, B, C, D, X [K 4] ,? S11, 0XF57C0FAF);
D = ff (D, A, B, C, X [K 5] ,? S12, 0X4787C62A);
C = ff (C, D, A, B, X [K 6] ,? S13, 0XA8304613);
B = ff (B, C, D, A, X [K 7] ,? S14, 0XFD469501);
A = ff (A, B, C, D, X [K 8] ,? S11, 0X698098D8);
D = ff (D, A, B, C, X [K 9] ,? S12, 0x8B44F7AF);
C = ff (C, D, A, B, X [K 10], S13, 0xFFFF5BB1);
B = ff (B, C, D, A, X [K 11], S14, 0X895CD7BE);
A = ff (A, B, C, D, X [K 12], S11, 0X6B901122);
D = ff (D, A, B, C, X [K 13], S12, 0xFD987193);
C = ff (C, D, A, B, X [K 14], S13, 0XA679438E);
B = ff (B, C, D, A, X [K 15], S14, 0X49B40821);
A = GG (A, B, C, D, X [K 1] ,? S21, 0XF61E2562);
D = GG (D, A, B, C, X [K 6] ,? S22, 0XC040B340);
C = GG (C, D, A, B, X [K 11], S23, 0X265E5A51);
B = GG (B, C, D, A, X [K 0], "S24, 0XE9B6C7AA);
A = GG (A, B, C, D, X [K 5] ,? S21, 0XD62F105D);
D = GG (D, A, B, C, X [K 10], S22, 0X2441453);
C = GG (C, D, A, B, X [K 15], S23, 0XD8A1E681);
B = GG (B, C, D, A, X [K 4], "S24, 0XE7D3FBC8);
A = GG (A, B, C, D, X [K 9] ,? S21, 0X21E1CDE6);
D = GG (D, A, B, C, X [K 14], S22, 0XC33707D6);
C = GG (C, D, A, B, X [K 3] ,? S23, 0XF4D50D87);
B = GG (B, C, D, A, X [K 8], "S24, 0X455A14ED);
A = GG (A, B, C, D, X [K 13], S21, 0XA9E3E905);
D = GG (D, A, B, C, X [k 2] ,? S22, 0XFCEFA3F8);
C = GG (C, D, A, B, X [K 7] ,? S23, 0X676F02D9);
B = GG (B, C, D, A, X [K 12], S24, 0X8D2A4C8A);
A = HH (A, B, C, D, X [K 5] ,? S31, 0xFFFA3942);
D = HH (D, A, B, C, X [K 8] ,? S32, 0X8771F681); C = HH (C, D, A, B, X [K 11], S33, 0X6D9D6122);
B = HH (B, C, D, A, X [K 14], S34, 0XFDE5380C);
A = HH (A, B, C, D, X [K 1] ,? S31, 0XA4BEEA44);
D = HH (D, A, B, C, X [K 4], S32, 0X4BDECFA9);
C = HH (C, D, A, B, X [K 7] ,? S33, 0XF6BB4B60);
B = HH (B, C, D, A, X [K 10], S34, 0XBEBFBC70);
A = HH (A, B, C, D, X [K 13], S31, 0X289B7EC6);
D = HH (D, A, B, C, X [K 0] ,? S32, 0XEAA127FA);
C = HH (C, D, A, B, X [K 3] ,? S33, 0XD4EF3085);
B = HH (B, C, D, A, X [K 6] ,? S34, 0X4881D05);
A = HH (A, B, C, D, X [K 9] ,? S31, 0XD9D4D039);
D = HH (D, A, B, C, X [K 12], S32, 0XE6DB99E5);
C = HH (C, D, A, B, X [K 15], S33, 0X1FA27CF8);
B = HH (B, C, D, A, X [K 2] ,? S34, 0XC4AC5665);
A = II (A, B, C, D, X [K 0] ,? S41, 0XF4292244);
D = II (D, A, B, C, X [K 7] ,? S42, 0X432AFF97);
C = II (C, D, A, B, X [K 14], S43, 0XAB9423A7);
B = II (B, C, D, A, X [K 5] ,? S44, 0XFC93A039);
A = II (A, B, C, D, X [K 12], S41, 0X655B59C3);
D = II (D, A, B, C, X [K 3] ,? S42, 0X8F0CCC92);
C = II (C, D, A, B, X [K 10], S43, 0xffeff47d);
B = II (B, C, D, A, X [K 1] ,? S44, 0X85845DD1);
A = II (A, B, C, D, X [K 8] ,? S41, 0X6FA87E4F);
D = II (D, A, B, C, X [K 15], S42, 0XFE2CE6E0);
C = II (C, D, A, B, X [K 6] ,? S43, 0XA3014314);
B = II (B, C, D, A, X [K 13], S44, 0X4E0811A1);
A = II (A, B, C, D, X [K 4],? S41, 0XF7537E82);
D = II (D, A, B, C, X [K 11], S42, 0XBD3AF235);
C = II (C, D, A, B, X [K 2] ,? S43, 0X2AD7D2BB);
B = II (B, C, D, A, X [K 9] ,? S44, 0XEB86D391);
A = addunsigned (a, aa) ;? b = addunsigned (b, bb) ;? c = addunsigned (c, cc) ;? d = addunsigned (d, dd);
}
// ?Step?5.?output?the?128?bit?digest
Var? Temp =? Wordtohex (a) WordToHex (B) WordTohex (C) WordToHex (D);
RETURN? TEMP.TOLOWERCASE ();
}?
